Mansaku Matsuura

Known by the nickname Cabbage, this seventeen-year-old serves as one of the seven central protagonists in RAINBOW. Despite a troubled history involving underage drinking and a violent incident that caused severe injuries, he possesses a surprisingly gentle soul. Among his fellow cellmates, he remains the most composed and tranquil. His compassionate side shines through his devotion to his friends, specifically seen when he tenderly tended to a bloodied Sakuragi following a brutal prison altercation.